Question

If 25 persons can dig trench 36m long in one day, then find the number of persons required to dig a trench 108m long in one day

Answer 1

75 men will do the job

Answer 2

first think that if 25 digs 36 m means one metre will be dug by so low amount of people (awe) while time remains constant means people will dig will be 25/36
then how many will do it for 108 metres?
simple 25/36 times 108 means 25 times 3 means 75 people